RT Journal Article
SR Electronic
T1 Insights into biotic and abiotic modulation of ocean mesopelagic communities
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2021.02.26.433055
DO 10.1101/2021.02.26.433055
A1 Janaina Rigonato
A1 Marko Budinich
A1 Alejandro A. Murillo
A1 Manoela C. Brandão
A1 Juan J. Pierella Karlusich
A1 Yawouvi Dodji Soviadan
A1 Ann C. Gregory
A1 Hisashi Endo
A1 Florian Kokoszka
A1 Dean Vik
A1 Nicolas Henry
A1 Paul Frémont
A1 Karine Labadie
A1 Ahmed A. Zayed
A1 Céline Dimier
A1 Marc Picheral
A1 Sarah Searson
A1 Julie Poulain
A1 Stefanie Kandels
A1 Stéphane Pesant
A1 Eric Karsenti
A1 The Tara Oceans coordinators
A1 Peer Bork
A1 Chris Bowler
A1 Samuel Chaffron
A1 Colomban de Vargas
A1 Damien Eveillard
A1 Marion Gehlen
A1 Daniele Iudicone
A1 Fabien Lombard
A1 Hiroyuki Ogata
A1 Lars Stemmann
A1 Matthew B. Sullivan
A1 Shinichi Sunagawa
A1 Patrick Wincker
A1 Olivier Jaillon
YR 2021
UL http://biorxiv.org/content/early/2021/02/27/2021.02.26.433055.abstract
AB Marine plankton mitigate anthropogenic greenhouse gases, modulate biogeochemical cycles, and provide fishery resources. Plankton is distributed across a stratified ecosystem of sunlit surface waters and a vast, though understudied, mesopelagic ‘dark ocean’. In this study, we mapped viruses, prokaryotes, and pico-eukaryotes across 32 globally-distributed cross-depth samples collected during the Tara Oceans Expedition, and assessed their ecologies. Based on depth and O2 measurements, we divided the marine habitat into epipelagic, oxic mesopelagic, and oxygen minimum zone (OMZ) eco-regions. We identified specific communities associated with each marine habitat, and pinpoint environmental drivers of dark ocean communities. Our results indicate that water masses primarily control mesopelagic community composition. Through co-occurrence network inference and analysis, we identified signature communities strongly associated with OMZ eco-regions. Mesopelagic communities appear to be constrained by a combination of factors compared to epipelagic communities. Thus, variations in a given abiotic factor may cause different responses in sunlit and dark ocean communities. This study expands our knowledge about the ecology of planktonic organisms inhabiting the mesopelagic zone.Competing Interest StatementThe authors have declared no competing interest.